This sentence is incorrect because it is a run-on sentence. This means that it should be broken into two separate sentences:
Ladybugs are also called lady beetles. In Europe, they are called ladybird beetles.
It's easy to catch this mistake by either reading the sentence out loud and listening for a natural pause, or by looking for one subject and one verb per sentence (Ladybugs are; they are).
Loneliness. ^-^ It is lonliness because he is all alone and he means ghosts meaning no one else is there.
Which details ? ........................
